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Analysis of workpiece thermal behaviour in cut-off grinding of high-strength steel bars to control quality and efficiency

: Putz, Matthias; Cardone, Macario; Dix, Martin; Wertheim, Rafael


CIRP Annals. Manufacturing Technology 68 (2019), Nr.1, S.325-328
ISSN: 0007-8506
Fraunhofer IWU ()
grinding; high-strength steel; finite element method

Cut-off grinding is a machining process for separating various components and materials. The application of this trimming technology for high-strength steel bars leads to thermally induced defects such as grinding burrs and residual stresses. By means of a developed and empirically validated FE model it is possible to control the temperature distribution in the workpiece. The implementation of a CBN grinding wheel along with the optimization of the cutting parameters allows a significant decrease of the thermal load in the machined bar. As a consequence, thermal defects are reduced, thus leading to a high-quality trimming process.